Question

The electronic structure of an ion Z2-

is 2,8. The number of neutrons is 11. The nucleon

number of Z is –

1

a) 16 b) 19 c) 20 d) 21​

Answer 1

Answer:

21

Explanation:

Because nucleons is the sum of neutrons and protons and number of protons is rqual to number of electrons.... So 11 + 2 +8 = 21.

Answer 2

Answer:

19

Explanation:

Z2- is an anion

Electronic configuration of atom Z = 2,6

No. of electrons in Z = 8

Protons= 8

Nucleons= 8+11= 19